Stocks sank Thursday in response to a sell-off in Shanghai sparked by renewed concerns over the U.S.-China trade war.

The 225-issue Nikkei average lost 234.17 points, or 1.03 percent, to end at 22,512.53 on the Tokyo Stock Exchange after jumping 192.98 points on Wednesday.

The Topix index of all first-section issues was down 17.67 points, or 1.00 percent, at 1,752.09, after adding 16.47 points the previous day.

The Tokyo market opened lower following a retreat in U.S. equities overnight and the yen’s strengthening against the dollar, brokers said.

After recouping their early losses, both the Nikkei and Topix again came under selling pressure and sank deep into negative territory in the afternoon.

Investor sentiment was dampened by a sharp fall in Shanghai stock prices that came on the heels of an announcement by the administration of U.S. President Donald Trump in Washington on Wednesday that it will consider jacking up the tariff planned for $200 billion worth of Chinese imports to 25 percent instead of the initially proposed 10 percent, brokers said.

Drops in U.S. stock futures in off-hours trading also weighed on the Tokyo market, they said.

“Investors had no choice but to react to such a substantial fall (by over 2 percent) in Shanghai shares,” said Chihiro Ota, general manager for investment research and investor services at SMBC Nikko Securities Inc.